The integumentary system forms a protective barrier between the external environment and the inner tissues. Other than that, the integumentary system organs work together to provide insulation and help in excreting waste from the body.
Skin which is the largest organ of the body is also the principal organ of the integumentary system. Other than the skin, nails, hair, scales and feathers that are actually extensions of the skin are also sometimes studied as integumentary system organs. All these structures together provide protection to the inner tissues of the body. Other than protection, the organs have other functions as well. Let us know more about them in detail in the following paragraphs.